D.P.
does he have a special class at school? what i mean, is he pulled out during the day to meet with another teacher and a group of kids for extra help, etc?? if so, see if you can invite these kids like him over for a big kid playdate. Maybe a video game tourneyment with pizza, rollerskating, etc. He can make friendships with kids who understand him and they can also help each other when other kids tease them. My nephew is a little different too with ADHD, but the moms have helped these kids form friendships outside of school. It had been the first time for some of these kids to get invited for sleep overs and birthday parties. Also, it gave the moms a brake because they took turns hosting sleepovers! good luck...kids can be mean, even if you are totally normal! Even if he can make one or two buddies, schoollife will be so much more tolerable!